Below are the main rubriks (i.e strongest indications or symptoms) of Merc Viv in traditional homeopathic usage, not approved by the FDA.
Nasal catarrh, with thin discharge; frequently with loss of smell and with hoarseness (after working fourteen days),
Constant nasal catarrh,
Complete nasal obstruction, right side, soon passing off, at 8 A.M. (second day),
Congestive fulness and stuffiness in nostrils, especially right side (after a few minutes),
Pinching sensation in right ala nasi (after a few minutes),
Irritation of nasal mucous membrane, as from catarrh (after twenty minutes),≡ more ...